Improvement in breech-loading- fire-arms



E. S. RENWICK.

Breech-Loadng Fire-Arm.

No. 102.4734. l Patented April 26, 1870.

WAM

thatA `the following isV theiefronn a stock or @hated tatw 13mm Patent N 102,434, dated April 26, 1870.

IlP-ROVEMENT IN' BREECH-LOADING FIRE-ARMS.

.The Schedule referred to in these Letten Patent and making part of the lame.

To all whontt may concern Be it known that I, EDWARD S. Rnxwroigof the city,.county, and State of New York, have invented new and useful Improvements lin Fire-Arms; and a full, clear, and exact description and specification of myv said invention.

' My invention hasreference to that class of tire-arms in *which the bar-rel isconstrncted to swing upon theA stock or lock-frame, so as to be turned out of and into the line of tiring; and

My invention consists of the combination ofthe bar- .rel of the fire-arm with a grooved pivot projecting I lock-trame having a cylindrical socket, to receive said pivotand prevent its lateral movement in every direct-ion, and one or more pins extending transvelselyoto the axis of the pivot, to prevent its withdrawal from' the sa'id cylindrical socket; also, of the combination of the said barrel, stock or lock-frame, grooved pivot and pin, with an enlarged ring-bearing, to sustain ai, portion of the strain during tiring.

. The advantages of these combinations are that the pivot mayibe forged solidly` onto the barrel, and that no movable hea'd or cap for the pivot isfrequired to hold the barrel to the stock.

The stock also need not be bored through for the reception ofthe pivot, and the application of the' mov,-

able head to it. Moreover, in this combination, the

)lateralpstiainsnpom the pivot iu every direction are Iborne by the lock-frame or stock,while the transverse pin or 'pins are not subjected to them.

My invention `consists further ofthe eombinationof f the saidbarreh grooved pivot,`1ockframe, havinga cylindrical stock and transverse pin, with a ring-bearing that relevesfthe pivot of strain, and the-pin 'or pins that hold it arerelieved of the greater part of the strain incident to tiring.

.`My improvements are represented in the accompanying drawing, as applied to a double-header pistolj v Figure l representinga side view of the pistol, :Figure 2` representing a longitudinal section of it, and

more or less of the lateral` Figure 3 representing a transverse section of the barrel detached from the stock.

The barrel A ofA the pistol so represented is constructed with the pivot B forged in one piece with it, and this pivot is grooved circumferentially,as seen at m, fig. 3.

The lock-frame() is bored partly through,to receive the pivot B, and is drilled transversely, to admit two' pins,- euegvhich. project into, the'ring-groove of the pivot, and hold the pivot in place.

he head In of the pivot (beyond the groove) may thus be of no greater diameter than the body a of the pivot; consequently, there is no necessity for boring the lock-frame through, so as to permit an enlarged head to be inserted at the side opposite the barrehand the under side of the lock-frame may be perfectly smooth, and unbroken by the protrusion of the head of the pivot. 4

Thelpivot B is surrounded by the enlarged bearing w, which consists of a ring-flange projecting from the barrel into a ring-groove formed in the upper side'oi the lock-frame C. This bearing, heilig of large dialneter and close to the barrel, bears the greater part of the strain of firing, and, consequently, relieves the pivot and the pins that hold it of strain, to which they would be otherwise subjected.

The invention is applicable to fire-arms whose barrels are not reversible end for end upon the stock, and one or two transverse pins may be used, as found expedientl What I claim as my invention, and desire to secure The combination ot' the barrel, stock, grooved pivot, transverse pin, and ring-bearing, substantially as hefore set lforth.

In testimony .whereof I have hereto-set my hand this 4th day of October, A. I). 1864.

' E.v S. RENWICK.

4 Witnesses:

` Jenn RATHBONE, Jr.,

A. SHEDLOCK. 

